Centrifugal grain-drier.



C. W. P. STEINMANN. GENTRIFUGAL GRAIN DETER. APPLIOATION FILED 00T. 29, 1907.

Patented Aug. 10, 1909.

To all whomi'it may concern: ,l i l HBD STATES'PAIENT; OFFICE CHARLES W. F. STEINMANN, oF'sAN FnANCIsCo, CALIFORNIA;

CENTRIIFUGAI. erRAIN-Imran.

Speciication of Letters Patent.

Patented' Aug. 1o, 1909,.

, lApplication filed October 29, 15507,. Serial No. 399,716.

-Be it known that I, CHARLES W. F. STEIN- MANN, citizen of theUnited States, residing inthe cityQand county of San Francisco and State of California, have invented new and useful Improvements in Grain and Like Drying Apparatus, of which the following isa specification.

apparatus for drying grains-'and like substances, such as the products left from malting, and the preparation of such grains to be fedt'o cattle, or forother and similar purposes. It consists in ythe combination of parts,

land in details of construction, which lwill be more fully ,explained by vreference to the accompanying drawings, in which the ligure 1s a vertlcal longitudinal sectional Aview of the apparatus.

It is the object of my invention to provide an apparatus for vthe separat-ion and eX,- trac-tion of moisture from grain,'or refuse or. Inalt'ingn operations, whereb the grain is dried and prepared for feeding to cattle, or for other purposes. l

The grain or material to placed in a storage hopper A, which is here shown in a vert-ical positionhaving afgate 2; and by means of a lever 3 and suitable connections the gate may be opened or closed atwill. After passin through the gate,'the material is dischar e into -a vertical 'chute 4, from which Ait is elivered into the annular concave 'bot-tom 5, whichv formsy the lower part of the conical revoluble separator. The

-center of this bottom extends upwardly', as.

shown, and carriesupon itsupper lend a' spiral orscrew 6, hereshown as tapering, the upper end extending up within thevertical` chute to a point near the Valve 2. By.'`

the revolution of this screw, the grain o1' material is caused to move downward bly; the positive action, and any tendency to ca 5 the material isacted upon by the centrifugal force. l

The separator is mounted 'upon -a ver The sides 6a o the separator are here'shown as divergent and perforated with holes,"s'o= that asthe grain rises over-'these sides,the

moisture within it is .extracted-'and thrown-- outwardly through the openings. Surroundlbe dried is first e or' lclog is prevented. From the concave bottom 'clin'ed' annular flange 10, moisture will be diverted into the bottom of the casing, and ay thence be drawn off through drains, as

at 11. My invention relates to limprovements in4 12 is an outwardly projecting flange carriedv bythe centrifugal pan, and projecting so that any tendency of the moisture to creep upwardly afterhaving been discharged by the perforation will vbe prevented, 'and this moisture will be'caused to drop down within the casing 9. v

The material still .passing upward above the openings in the sides 6a will be diverted outwardly by a divergent flange 13, and. passing over the'edge'of this device, it will fall into the upper-,part of an inclosing casingl.11, thence passing down' into the annular chamber '15 which surrounds the casing 9. Within this chamber 15 is an inclined floor 1 6, which follows the curvature of the .chamber and discharges outwardly through a'passage, as at 17. v

. ing. this centrifugal portion is a casing 9, I

18 is a scraper suitably xed with relation I lto the revoluble separator, and projecting toward the'sides thereof, so that asthe separator -revolves,'any tendency of the material to become massed'or caked together 'will be prevented, and the material will be separated and caused to rise to the discharge .over the/rim 13, as previously stated. -The lwholeof this portion of the appgfatus may Abe supported upon a suitable fra work, as shown. v-The material .being deprived deal of. its moisture, may then be delivered into a receiver, ras at 19, and by means of a revolubl auger 20. thematerial is discharged into the troughof a revoluble auger or screw 21, Vwhich carriesit-along in a horizontal directionuntil it passesjthroughan opening beyond the vend ofthe auger c hannel, and falls into another channel wltlnn a `which 'revolvesa. "conveying auger 22. `These 'angers Vare caused togan 'chains,as\at23Xl The cylinders or c I .which of a great the gramiisgconveyed, are Ihere shown as shown and the inal cylinder delivers into a tinal discharge 32.

The foregoing brief description may repf resent any form of drier with Which thecentrifugal separator may be associated to carry outl the purposes of my presentinvention.

Having thus described my invention, what I claim and desire to secure by Letters le .Patent is- 1. An improved drying apparatus includ- .ing a revoluble pan having upwardly diverging perforated sides and a concavcd bottom` a vertically disposed screw extending upwardly from the center of the pan and revoluble therewith and adapted to feed the material downwardly toward the bottom of the pan by direct action, an inclosing chute through which the material is delivered around the screw and into the bottom of the pan, a stationary sera/per 'extending into the pan, ,a moisture receiving` casing surounding the perforated portion of the pan, an independent receiver surrounding the upper periphery of the pan, into which receiver the grain is delivered, an inclined spiral extending from said casing around the pan` an exterior casing having an outlet to which the spiral leads the material, a heat e applying and agitating mechanism to which the material is delivered, and means whereby the material is continuously acted upon to first deprive it of excess of free moisture, and then to reduce it to a dry mass.

2. In an apparatus of the character described, a revoluble pan having a concave bottom, divergent, perforated sides and moisture controlling flanges upon the exterior aboveand below the perforations, a vertically disposed screw extending upwardly from-the center of the pan and revoluble therewith, an inclosing chute through which material is -delivered around the screw and into the bottom of thel pan, to

be carried upwardly by centrifugal force, a A

stationary scraperextending into the pan, a moisture receivingcasing surrounding the perforated portion ofthe pan, an independent receiver surrounding the upper periphery of the pan, into which receiver the grain is delivered, and an inclined spiral extending from said casing around the pan and downwardly to a discharge opening. y

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES lV. F. STEINMANN.' ll'itnesses:

(lno. ll. S'rnoxe,: C. A. PENrInLn. 

